Mining-machine truck.



C. E. DAV'lS.

MlNlNG MACHINE TRUCK.

APPLlcMloN man sem. 14, 1912.

Mtente June 8, 1915.

`- 2 SHEETS-SHEET 1.

NSN.

C, E. DAVIS.

MINING MACHINE TRUCK.

APPLlcMloN FILED SEPTA/1f, 1912.

Patented June 8, 1915.

2 SHEETS-SHEET 2.

CHARLES E. DAVS, OF CHICAGO, ILLENDIC" ASSIGNR TO GGODMAN EIJNUEFCTURHQ'G CMPANY, OF CHICAGO, ILL'N'OIS, A CORPORATEQN OF LLN.

Application flied Septsmbel wmes. Thi@ 910i, may be *Slm-mud in any C@ rsuxd mmmur as by mmm QT the loop 'Y'.

W'h'n 'xm momma?, frumeis gmsiznn *in had Lho. machin@ as shown n fm exfunylv? 'r, s indim, 'ibs Muvo? and re. m the F001. 'like im en@ of the maghi@ frzmne iS lifted as ihe ame mow- 1Ong-g; ih@ stationu'y frame means of @L @lined face 8 mached h@ mm'ae im ne., said insvnec face engaging m oppmse Lace comleced with the saionary fase. is were a 1L 'the the im;

to its unloading position due to the inclined face or faces 8. As herein shown, this limiting device is the part 14.

In the use of the device, the movable frame is moved to" the position shown in Figs. l and 2 where the front end engages Y the Hoor of themine.4 The movable frame 1s then locked against longitudinal movement. The front end of the inclined movable frame is then placed under the mining machine and the. mining machine moved t erealong until it engages the part 13 so as to move the stop 10 to its inoperative position. The further movement of the mining machine then carries the movable frame l along with it, the front end ef, the movable frame being gradually lifted by the inclined faces 8. The

' i part may be held in this position by means of a holding device 16. Wher it is desired to unload the mining machine, the holding device 16 is released whereupon the frame and mining machine automatically moves to the position shown in Fig. 2, the inclined faces 8 moving along the rollers 9.

It will be seen that 1n this device, they movable frame rocks or rotates about the axle line 'of the rear pair of wheels 'that is, the axle line of the pair of wheels farthest from the loading end. This constructionv keeps the ltop of the mining'v macliine low While being loaded and makes it sothat the uppermost point only moves through asmall 'arc while the device is being loaded.. It `will be seen that if the frame moves about the front axle, the mining machine would have to run up higher in the air and could not then be loaded in places where there is a lim ited space between the floor and the roof.

I claim-v f 1. A. mining machine truck comprising a stationary frame mounted on four/ wheels and a movable frame consti/tuting the bed of the truck and capable of revolvin about the axle line of the pair of wheels arthest from the loading end ofthe frame.

2. A mining machine truck comprising a stationary frame mounted on four wheels and a movable frame capable of revolving about the axle line of the pair of Wheels farthest from the loading end of the frame and also capable of moving lengthwise with the truck. l

3. A mining machine truck comprising a stationary frame mounted on four wheels and a movable frame 'capable of revolving about .the axle line of the vpair of wheels farthest from the loading end of the frame and also capable of moving lengthwise with the truck, alatch to prevent the said longitudinal motion occurring before the mining machine reaches a predetermined position on the truck.

4. miningl/machine-truck comprising a stationary frame mounted on four wheels and a movable frame caplable of revolving about the axle line of t e pair of wheels farthest from the loading, end of the frame and also capable of moving lengthwise with the truck, and means for causing the mova` ble frame to move forward when unloading the machine. y

5. A mining machine truck comprising a stationary frame mounted on' four wheels and a movable frame capable of Vrevolving about the axle line of t e parjtjfwheels farthest from the loading end of the frame and also capablefvef moving lengthwise with the truck, and v'means for propellin the movable frame to move backward wit machine under predetermined conditions.

6. A mining machine truck comprising a stationary frame mounted on four wheels and. a movable frame capable of revolving about the axle line of the pair-,of wheels farthestif'rom the loading end of the frame 8. The combination with va stationary framemounted on wheels of a 'longitudinal movable frame adapted to be moved tovan inclined position, an inclined face on 'the' movable frame and a coperatingface on the stationary frame, said latter face located below the axis of rotation of the frontwheels whereby when the vmovable frame is moved longitudinally, the frontend of the movable vframe is Ilifted.

the

and also capable of lmoving lengthwise with i 9. A mining machine truck comprising a stationary frame mounted on four wheels and a movable frame constituting the bed of the truck, said movable frame capable of revolving about the axle line of the pair'of wheels farthest from the loading end of the frame and means for simultaneously supporting the other end of the frame upon the remaining wheels, while this movement is taking place. Y

Signedv at Chicago, Illinois, this 10th day of September 1912.

i p CHARLES E. DAVIS. Witnesses:

GENEVA HERTH,

DENIE A. WALTERS. 

